Forebay construction.



No. 854,539. PATENTED MAY 21, 1907. JQ E. SIRRINB. FORBBAYCONSTRUCTION.. APPLIOATION HLBD JAN. so, 19o?.

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PATENTED MAY 21, 1907.

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APPLIOATIONIILED JAN. 30, 1907.

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JOSEPH E. SIRRINE, OF GREENVILLE, SOUTH CAROLINA.

FOREBAY CONSTRUCTION.

Specification of Letters Patent.

Patented May 21, 190'?.

Applimtion filed January 30,1907. Serial No, 354,897.

To @ZZ whom, Lt may concern:

Be it known that I, JOSEPH E. Sinnrivn, a citizen of the United States,residing at Greenville, in the county of Greenville and State of SouthCarolina, have invented certain new and useful Improvements in F orebayConstruction; and I do hereby declare the following to be a full, clear,and exact description of the invention,such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention relates to improvements in fore-bay construction to be usedin connection with water power apparatus, and the said inventionconsists in providing a strong and durable construction made ofreinforced concrete in which great strength, durability and stabilityare combined, as will be hereinafter more fully described.

Reference is had to the accompanying drawings, in which the same partsare indicated by the same letters throughout the several views.

Figure 1 shows asection through the apparatus along the broken line 1 1of Fig. 2, and looking in the direction of the arrows. Fig. 2 representsa plan view of one end of the apparatus showing two wheel chambersemptied of water. I/Vhile two wheel chambers are only shown, it isintended that the number may be varied indefinitely. Fig. 3 shows asection, on an enlarged scale, on the line 3 3 of Fig. 2, and looking inthe direction of the arrows; but for the sake of clearness in thedrawings the cross hatching of the parts in section is omitted. Fig. 4shows a plan of one of the partition walls with the tie beams connectedthereto, also on an enlarged scale; and Fig. 5 is a detail showing aportion of the outer face of the back wall with the steel reinforcingrods shown in dotted lines.

A represents one of a plurality of wheel chambers, separated bypartition walls O.

B represents one of the end walls of the' apparatus, and D representsthe back wall, which is horizontally arched, as shown in plan in Fig. 2.

E represents tie beams made of reinforced concrete, having rods Pinserted therein.

The front wall F is perforated, as at F0, to admit water, which watermay be shut olf by sliding doors G controlled by suitable apparatus I'I.These doors are not part of the present invention, and will not befurther described.

of the doors G, which grid rests upon the scarp K of the concrete floorK, which floor is provided with passages Ko leading to the tail race K2.

The foundation preferably projects downward, as at K3, K4 into the bedrock, or other support L. v

M, M are turbines driving the shaft M connected to the generator Nmounted in the power house O.

All of the walls, as well as the foundation K, are reinforced with steelrods I), which are embedded in the cement in the usual well known way.VThese rods may be hooked together, as indicated at p in Figs. 3 and 4,to give the requisite length. The rods may be bent to form anchors, asshown at 1), in Fig. 3, or may be crossed to give strength, as shown atp0 in Fig. 4, and when placed around openings may be arranged in hoopform, as shown at p2 in Fig. 5.

In the arched ends of the chambers A, the horizontal reinforcing rodsare arched, as at p3, in Fig. 2,which rods are also indicated at p3 inFig. 5. The side, front and back walls of the chamber A are madeintegralwith the base K and are all tied together Vwith rods, as hereinbeforedescribed.

It will be noted that there is a heavy un balanced pressure owing to theheight of the.

water on the back walls D tending to tear these walls away from the sidewalls of the chambers, and this pressure is resisted by the tensilestrength of the curved reinforcing rods p3, and thus great strength isgiven to these back walls to resist this backward pressure. Furthermore,by having the side and back walls tied to the base, when the chambers Aare full of water the weight of this water will serve to hold the entirestructure firmly on its base, and thus the weight of the water will addstability to the structure.

It will be obvious that various modilications might be made in theherein described apparatus, which could be used without departing fromthe spirit of my invention.

I-Ia'ving thus described my invention, what I claim and desire to secureby Letters Patent of the United States, is zh l. A fore-bayconstruction, comprising a IOO IIO

foundation and side, front and backV Walls,

all made of an integral mass of concrete tied together With reinforcingrods, `with outlet openings in the base of said foundation, and inletopenings in the front Walls, substantially as described.

2. A fore-bay construction, comprising a foundation and side, front andback Walls, all made of an integral mass of concrete tied together Withreinforcing rods, With horizontal tie beams made of reinforced concreteconnecting the side Walls, With outlet openings in the base of saidfoundation, and inlet openings in the front Walls, substantially asdescribed.

3. A fore-bay construction comprising a foundation and side, front andback Walls, all made of an integral mass of concrete tied together 'Withreinforcing rods, the rear Walls being in the form of horizontal archesWith.

arch-shaped reinforcing rods tying said arches to the side Walls, withoutlet openings in the base of said foundation, and inlet openings inthe front Walls, substantially as described.

4. A fore-bay construction comprising a foundation and side, front andback Walls, all made of an integral mass of concrete tied together withreinforcing rods, the rear Walls being in the form of horizontal archeswith arch-shaped reinforcing rods tying said arches to the side Walls,and inlet and outlet openings for the Water, substantially as described.

5. A fore-bay construction comprising a foundation and side, front andback Walls, all made of an integral mass of concrete tied together withreinforcing rods, the rear Walls being in the form of horizontal arches'With arch-shaped reinforcing rods tying said arches to the side Walls,With tie'beams connecting the side Walls, and inlet and outlet openingsfor the Water, substantially as described.

In testimony whereof, I affix my signature, in presence of tWoWitnesses.

JOSEPH E. SIRRINE.

Witnesses'.

G. A. I-IENNING, Jr., L. D. SPANN.

